When two indexed arrays are used, you can visualize the result as a table or spreadsheet. The elements of the first array represent the rows of the table, while the elements of the second array represent the columns. For example, the following multi-dimensional array uses two indexed arrays to track task lists for each day of the week. The first array, masterTaskList, is created using the Array constructor. Each element of the array represents a day of the week, with index 0 representing Monday, and index 6 representing Sunday. These elements can be thought of as the rows in the table. You can create each day’s task list by assigning an array literal to each of the seven elements that you create in the masterTaskList array. These array literals represent the columns in the table.
var masterTaskList:Array = new Array();
masterTaskList[0] = ["wash dishes", "take out trash"];
masterTaskList[1] = ["wash dishes", "pay bills"];
masterTaskList[2] = ["wash dishes", "dentist", "wash dog"];
masterTaskList[3] = ["wash dishes"];
masterTaskList[4] = ["wash dishes", "clean house"];
masterTaskList[5] = ["wash dishes", "wash car", "pay rent"];
masterTaskList[6] = ["mow lawn", "fix chair"];
To access individual items on any of the task lists using bracket notation. The first set of brackets represents the day of the week, and the second set of brackets represents the task list for that day. For example, to retrieve the second task from Wednesday’s list, first use index 2 for Wednesday, then use index 1 for the second task in the list.
trace(masterTaskList[2][1]); // Output: dentist
To retrieve the first task from Sunday’s list, use index 6 for Sunday and index 0 for the first task on the list.
trace(masterTaskList[6][0]); // Output: mow lawn